A handhold on a climbing wall at a playground holds a bit of snow following overnight snowfall, seen in upper Queen Anne on the morning of Thursday, Feb. 22, 2018.

A handhold on a climbing wall at a playground holds a bit of snow following overnight snowfall, seen in upper Queen Anne on the morning of Thursday, Feb. 22, 2018.

Photo: GRANT HINDSLEY, SEATTLEPI.COM

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Snow covers the playground at St. Anne School in upper Queen Anne on the morning of Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the morning commute. less

Snow covers the playground at St. Anne School in upper Queen Anne on the morning of Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the morning ... more

Photo: GRANT HINDSLEY, SEATTLEPI.COM

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Snow-covered vehicles wait for the coming sunshine in upper Queen Anne on the morning of Thursday, Feb. 22, 2018.

Snow-covered vehicles wait for the coming sunshine in upper Queen Anne on the morning of Thursday, Feb. 22, 2018.

Photo: GRANT HINDSLEY, SEATTLEPI.COM

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A cul de sac on 2nd Ave W shows signs of snow and ice on the morning of Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the morning commute.

A cul de sac on 2nd Ave W shows signs of snow and ice on the morning of Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the morning commute.

Photo: GRANT HINDSLEY, SEATTLEPI.COM

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Views from Kerry Park on the morning of Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the morning commute.

Views from Kerry Park on the morning of Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the morning commute.

Photo: GRANT HINDSLEY, SEATTLEPI.COM

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An older, snow-covered Volvo, photographed in upper Queen Anne on the morning of Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the morning commute. less

An older, snow-covered Volvo, photographed in upper Queen Anne on the morning of Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the morning ... more

Photo: GRANT HINDSLEY, SEATTLEPI.COM

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Frozen footsteps in upper Queen Anne on the morning of Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the morning commute.

Frozen footsteps in upper Queen Anne on the morning of Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the morning commute.

Photo: GRANT HINDSLEY, SEATTLEPI.COM

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An ice and snow covered road in upper Queen Anne on the morning of Thursday, Feb. 22, 2018.

An ice and snow covered road in upper Queen Anne on the morning of Thursday, Feb. 22, 2018.

Photo: GRANT HINDSLEY, SEATTLEPI.COM

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A snow-covered bench at Kerry Park on the morning of Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the morning commute.

A snow-covered bench at Kerry Park on the morning of Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the morning commute.

Photo: GRANT HINDSLEY, SEATTLEPI.COM

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A frozen dog bowl in upper Queen Anne on the morning of Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the morning commute.

A frozen dog bowl in upper Queen Anne on the morning of Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the morning commute.

Photo: GRANT HINDSLEY, SEATTLEPI.COM

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Snow covers roads and cars in upper Queen Anne on the morning of Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the morning commute.

Snow covers roads and cars in upper Queen Anne on the morning of Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the morning commute.

Photo: GRANT HINDSLEY, SEATTLEPI.COM

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A message from late night sledders at Kerry Park in Queen Anne on the morning of Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the morning commute. less

A message from late night sledders at Kerry Park in Queen Anne on the morning of Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the morning ... more

Photo: GRANT HINDSLEY, SEATTLEPI.COM

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Trees are dotted with snow in upper Queen Anne on the morning of Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the morning commute.

Trees are dotted with snow in upper Queen Anne on the morning of Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the morning commute.

Photo: GRANT HINDSLEY, SEATTLEPI.COM

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A small snowman looks as though it's taking over the Seattle skyline, seen at Kerry Park on Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the morning commute. less

A small snowman looks as though it's taking over the Seattle skyline, seen at Kerry Park on Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the ... more

Photo: GRANT HINDSLEY, SEATTLEPI.COM

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An older, snow-covered Volvo, photographed in upper Queen Anne on the morning of Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the morning commute. less

An older, snow-covered Volvo, photographed in upper Queen Anne on the morning of Thursday, Feb. 22, 2018. Despite the sun, temperatures hovered in the low 30's and ice remained on the road for the morning ... more

Photo: GRANT HINDSLEY, SEATTLEPI.COM

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A tetherball at snow-covered playground in upper Queen Anne on the morning of Thursday, Feb. 22, 2018.

A tetherball at snow-covered playground in upper Queen Anne on the morning of Thursday, Feb. 22, 2018.

Western Washington saw snow accumulation from Olympia to Everett overnight Wednesday, with amounts ranging from a trace to several inches. According to the NWS, most of Seattle received between one-half to one inch. Further south, Graham in Pierce County topped local accumulation lists at 4½ inches.

One inch of snow was reported at Seattle-Tacoma International Airport by 10 p.m. Wednesday, according to the NWS. Meteorologists there said the last time Sea-Tac got this much snow this late in the season was a two-inch accumulation on Feb. 23, 2011.

Wet snow and below-freezing temperatures made for slick, treacherous conditions on the roads and caused delays and closures throughout the region. For a full, updated list from SeattlePI news partner KOMO News, click here.